Open Source Laser Cutter (v2)

The Buildlog.net 2.x Laser is a second generation open source laser cutter that definitely improves the design of the first model. The 2 axis machine (optional vertical axis is manual or an upgrade is available) boasts a large 12” x 20” x 4” workspace while being smaller than its predecessor, fitting a table top design.

The older model had a goal of being self replicating, which limited the types of materials used, the new 2.x model drops that goal and uses stronger metal parts. Electronics are now modularized that allow easier and cleaner wiring, though you will still need a controller board.

There is an XMOS based controller provided on the main page of BuildLog.net, along with mechanical drawings, schematics, gerbers, instructions for both machines, and kit parts (for the first model) along with resources for the heavy items like laser tubes and power supplies.

Tube can be had on eBay for $120 + about $230 for a power supply. Be sure to compare shipping costs on the tubes that can add a lot. They last well over a year with hard use and longer with light use. They do have a shelf life, but mine is close to two years old and going strong.

I just recieved my 40 watt tube and power supply yesterday. Got it from ColeTech off ebay for $388 shipped.

The lasers are a soft seal tube so they will loose helium over time just like the very old HeNe lasers. I am willing to be that storing the tube in a bag of helium might extend its life. It out to mitigate the diffusion of helium through the mirror seals.

@synth

They are referring to the RetinaEngrave board from Full Spectrum Engineering. It is a XMOS based controller board and software package that makes your laser cutter behave more like an Epilog or Universal laser cutter. Looks very promising. Also supposed to talk to Mach3 so you can use it to control a CNC machine.

So, buildlog.net got v2 of the their DIY laser cutter out the door. What the hell have the lasersaur people been doing with the $20K that people donated to them? That project seems to be stalled. I think lasersaur should just give the $20K to buildlog and give up.

@Buildlog
Amazing machine. I have been torn between CNC mill and laser cutter for a long time and while I’m still not sure which way to go, I know which build to use if I choose the laser route.

Anyone notice that they cut the acrylic/abs/etc with a CNC router and not a laser cutter? Any reason for that? Won’t a 40watt laser cut those materials? I’m not bashing or anything, just curious why you wouldn’t run parts on a laser cutter and get clean cuts (with potentially less material wasted).

The original laser was self replicating, cutting most of it’s own custom parts.

Lasers cut acrylic extremely well but acrylic is expensive and not ideal for some of the parts. This laser drops that goal and uses more sheet metal and HDPE. HDPE is inexpensive, but does not cut well on lasers. It burns a little and often re-welds the cut line.